Preparation, mechanical properties of waterborne polyurethane and crosslinked polyurethane-acrylate composite

2011 ◽  
Vol 124 (2) ◽  
pp. 958-968 ◽  
Author(s):  
Heping Xu ◽  
Fengxian Qiu ◽  
Yingying Wang ◽  
Dongya Yang ◽  
Wenling Wu ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Waterborne Polyurethane ◽  
Polyurethane Acrylate

Synthesis and Properties of Waterborne Polyurethane-Acrylate Hybrid Emulsion Modified by Organic Silicane

2011 ◽  
Vol 287-290 ◽  
pp. 1532-1537 ◽  
Author(s):  
Xiao Juan Lai ◽  
Yi Ding Shen ◽  
Lei Wang
Keyword(s):  
Mechanical Properties ◽  
Thermal Stability ◽  
Tensile Strength ◽  
Mass Fraction ◽  
Waterborne Polyurethane ◽  
Ethyl Acrylate ◽  
Isophorone Diisocyanate ◽  
Elongation At Break ◽  
Polyurethane Acrylate ◽  
Waterborne Polyurethane Acrylate

Waterborne polyurethane emulsions were synthesized with isophorone diisocyanate(IPDI), dihydromethyl propionic acid(DMPA) and poly-ε-caprolactone glycol(PCL), and then reacted with hydroxy-ethyl acrylate(HEA) and 3-aminopropyltriethoxylsilane(APTES) to cap the terminal -NCO groups. The polyurethane emulsions were used to copolymerize with acrylates to synthesize the modified waterborne polyurethane-acrylate hybrid emulsions. The structure, thermal stability and crystallinity of modified polyurethane were studied by FTIR, TG, XRD and the mechanical properties of modified polyurethane films was also investigated. The results show that crystallization of the modified waterborne polyurethane decreases and thermal stability is improved. When the mass fraction of acrylate is 20% and APTES content is 15%, tensile strength of the modified polyurethane films can reach 23.9MPa and elongation at break is 247%.

scholarly journals Characterization of mechanical properties of stab-resistant angle-ply flexible composites

2020 ◽  
Vol 15 ◽  
pp. 155892502093555
Author(s):  
Mengjin Wu ◽  
Ruosi Yan ◽  
Zhihui Xia ◽  
Bao Shi ◽  
Sainan Wei ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Hybrid Composites ◽  
Orientation Angle ◽  
High Strength ◽  
Waterborne Polyurethane ◽  
Flexible Composites ◽  
Polyurethane Acrylate ◽  
Spun Yarn ◽  
Coating Method ◽  
Waterborne Polyurethane Acrylate

In this study, we fabricated para-aramid flexible angle-ply-laminated hybrid composites based on weft-knitted reinforcements. Here, four kinds of weft-knitted reinforcements with rib, interlock, punto di roma, and two-thread fleecy were prepared using para-aramid spun yarn. They were then compounded with silicone rubber and waterborne polyurethane–acrylate using the coating method. The layers were angle-plied to produce stab-resistant, weft-knitting-reinforced, flexible laminated hybrid composites. Tensile and tearing strengths of the para-aramid-knitted reinforcements were investigated. Relevant response analyses were chosen to evaluate the influence of three independent variables, including weft-knitted structures, matrix types, and ply orientations. The results showed that the mechanical properties of the composites were dependent on weft-knitted structures and matrix types. The fabric with high strength and the degree in approximate isotropy of stress in all composites was most suited for the reinforcement of the flexible stab-resistant composite. The optimum design with the best stab-resistant property was punto di roma/waterborne polyurethane–acrylate with a ply orientation angle of [0°/0°/0°/0°]. The interlaminar adhesion of flexible stab-resistant composite based on waterborne polyurethane–acrylate can be improved by increasing the surface roughness of fabric structure or modifying its surface.

scholarly journals Effects of boron nitride nanotube content on waterborne polyurethane–acrylate composite coating materials

RSC Advances ◽  
2021 ◽  
Vol 11 (21) ◽  
pp. 12748-12756
Author(s):  
Yong Joon Lee ◽  
Yunju La ◽  
Ok Sung Jeon ◽  
Hak Ji Lee ◽  
Min Kyoon Shin ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Boron Nitride ◽  
Composite Coating ◽  
Chemical Resistance ◽  
Waterborne Polyurethane ◽  
Boron Nitride Nanotubes ◽  
Boron Nitride Nanotube ◽  
Coating Materials ◽  
Polyurethane Acrylate ◽  
Waterborne Polyurethane Acrylate

Composite coating materials consisting of waterborne polyurethane–acrylate (WPUA) and boron nitride nanotubes (BNNTs) showed enhanced mechanical properties, thermal properties and chemical resistance.

Waterborne polyurethane nanocomposite reinforced with amine intercalated α-zirconium phosphate - Study of thermal and mechanical properties

Polymer ◽  
2020 ◽  
Vol 186 ◽  
pp. 122008 ◽  
Author(s):  
Manoj B. Kale ◽  
Nidhin Divakaran ◽  
Suhail Mubarak ◽  
Duraisami Dhamodharan ◽  
T. Senthil ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Zirconium Phosphate ◽  
Waterborne Polyurethane ◽  
Thermal And Mechanical Properties

scholarly journals Few-layer graphene aqueous suspensions for polyurethane composite coatings

MRS Advances ◽  
2016 ◽  
Vol 2 (1) ◽  
pp. 57-62 ◽  
Author(s):  
Eunice Cunha ◽  
Fernando Duarte ◽  
M. Fernanda Proença ◽  
M. Conceição Paiva
Keyword(s):  
Mechanical Properties ◽  
Tensile Testing ◽  
Composite Coatings ◽  
Composite Films ◽  
Water Vapor Permeability ◽  
Waterborne Polyurethane ◽  
Vapor Permeability ◽  
Layer Graphene ◽  
Polyurethane Composite ◽  
Few Layer Graphene

ABSTRACTGraphite nanoplates (GnP) have recently attracted attention as an economically viable alternative for the development of functional and structural nanocomposites. The incorporation of GnP into waterborne polyurethane (WPU) with loadings from 0.1 to 10 wt.% was studied. The mechanical properties of the composite films were assessed by tensile testing showing an increase of the Young’s modulus up to 48%. The electrical conductivity increased by 9 orders of magnitude and the water vapor permeability of the composite films decreased 57% for composites containing 5.0 wt.% of GnP.

An Unparalleled H-bonding and Ion-bonding Crosslinked Waterborne Polyurethane with Super Toughness and Unprecedented Fracture Energy

2021 ◽  
Author(s):  
Yuan Yao ◽  
Bo Liu ◽  
Ziyang Xu ◽  
Jianhai Yang ◽  
Wenguang Liu
Keyword(s):  
Mechanical Properties ◽  
Fracture Energy ◽  
Waterborne Polyurethane ◽  
Self Healing ◽  
Polyurethane Elastomers

Self-healing polyurethane elastomers have been extensively studied; however, developing an eco-friendly self-healable waterborne polyurethane (WPU) with exceptional mechanical properties remains a great challenge. Herein, we report healable, and highly tough...

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